Returns the value of the custom property for the specified key. The return value can be of the following types, depending on the property: String, Double, Integer, Boolean or DateTime. (To create a custom property, use DocumentProperties.SetCustomProperty.)

 public System.Object GetCustomProperty(System.String key)
Public Function GetCustomProperty(ByVal key As String) As Object

The key or name of the custom property.

The value of the custom property.

Object reviewedBy = docProps.GetCustomProperty("Reviewed by");
Dim reviewedBy As Object = docProps.GetCustomProperty("Reviewed by")